Intersil Introduces Industry's Smallest Isolated RS-485 Transceiver ISL32704E

Intersil introduces the industry's smallest isolated RS-485 differential bus transceiver, the ISL32704E, which provides 4Mbps bidirectional data transfer for the Industrial Internet of Things (IIoT). The high-speed ISL32704E offers industry-leading immunity to electromagnetic interference (EMI) and common mode transient immunity (CMTI) in a small 4mm x 5mm QSOP package that is 70% smaller than competing devices. In addition, it also provides 600VRMS operating voltage, which is about 50% higher than the nearest competitor.

The ISL32704E RS-485 transceiver utilizes giant magnetoresistance (GMR) technology to provide galvanic isolation, freeing the communication bus from common-mode noise generated in factory and building automation environments. The ISL32704E is ideal for device-bus interfaces in IIoT networks for connecting programmable logic controllers (PLCs) to meters, robots, motor drives, data acquisition and digital I/O modules. Intersil's ISL32704E GMR isolation has the advantage of lower radiated emissions and lower EMI susceptibility than other isolation technologies. In addition, its GMR isolation eliminates the need for complex coding schemes, which are not possible with capacitive and transformer-based isolators that use RF carriers or pulse width modulation (PWM) to transmit DC and low frequency signals across obstacles.

Philip Chesley, senior vice president of precision products at Intersil, said: "Our new ISL32704E isolated RS-485 transceiver generates virtually no radiated EMI, solving one of the biggest problems customers face in industrial design. No need for any shielding. The transceiver also simplifies PCB layout, reduces board space, and enhances data transmission reliability and integrity."

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Author：Brittany Antonia （The author of article owns the copyright.）